No. The Deep South seceded because they feared the expansion of slavery was threatened. Slavery where it existed was not threatened as Lincoln said. The expansion of free vs slave states is misleading, though. Free meant free of blacks, literally. And free meant that the north's industrial economy could expand vs the South's agrarian one. Lincoln was a former railroad lobbyist, and was definitely pro northern economy. It wasn't a moral issue. He, like most Americans, was a racist. Tn, Va, NC seceded when Lincoln threatened to invade the Deep South because they recognized such a move as a tyrannical one. As our declaration proclaimed, any people had the right to alter or abolish government. It was okay vs the British, but suddenly was not okay when the South attempted to do the same thing vs the north. The constitution wasn't a blood oath. Lincoln militarily forced the South to remain in the union against its will much like the Soviet Union did with its empire. Lincoln did not want to lose the territory or the revenue. He was a military imposed dictator, on the South, at least.